Steps

2Spray 4-quart slow cooker with cooking spray. Spread 1 cup of the pasta sauce in slow cooker. Layer with half of the ravioli, half of the ricotta mixture and 1 cup of the fontina cheese. Top with 1 cup pasta sauce and remaining ravioli and ricotta mixture. Pour remaining pasta sauce over top.

2Spray 4-quart slow cooker with cooking spray. Spread 1 cup of the pasta sauce in slow cooker. Layer with half of the ravioli, half of the ricotta mixture and 1 cup of the fontina cheese. Top with 1 cup pasta sauce and remaining ravioli and ricotta mixture. Pour remaining pasta sauce over top.